package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.List;

@Service
public class CategoryServiceImpl implements CategoryService {
    @Autowired
    private CategoryMapper categoryMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;

    /**
     * 新增分类
     *
     * @param categoryDTO
     */
    @Override
    public void addCategory(CategoryDTO categoryDTO) {
        Category category = new Category();

        //属性拷贝
        BeanUtils.copyProperties(categoryDTO, category);

        //设置创建时间和修改时间
//        category.setCreateTime(LocalDateTime.now());
//        category.setUpdateTime(LocalDateTime.now());

        //设置创建人和修改人
//        category.setCreateUser(BaseContext.getCurrentId());
//        category.setUpdateUser(BaseContext.getCurrentId());

        //设置分类状态
        category.setStatus(StatusConstant.ENABLE);

        //插入数据库
        categoryMapper.insertCategory(category);

    }

    /**
     * 根据id删除分类
     *
     * @param id
     */
    @Override
    public void deleteCategory(Long id) {
        //判断当前分类是否关联了菜品，如果关联了菜品，抛出业务异常
        Integer dishCount = dishMapper.countByCategoryId(id);
        if (dishCount > 0) {
            //当前分类关联了菜品，抛出一个业务异常
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }
        Integer setmealCount = setmealMapper.countByCategoryId(id);
        if (setmealCount > 0) {
            //当前分类关联了套餐，抛出一个业务异常
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }

        //正常删除分类
        categoryMapper.deleteCategory(id);
    }

    /**
     * 根据id修改分类
     *
     * @param categoryDTO
     */
    @Override
    public void updateCategory(CategoryDTO categoryDTO) {
        Category category = new Category();

        BeanUtils.copyProperties(categoryDTO, category);

        //设置修改时间和修改人
//        category.setUpdateTime(LocalDateTime.now());
//        category.setUpdateUser(BaseContext.getCurrentId());

        //设置分类状态
        category.setStatus(StatusConstant.ENABLE);

        categoryMapper.update(category);

    }

    /**
     * 分页查询分类
     *
     * @param categoryPageQueryDTO
     * @return
     */
    @Override
    public PageResult getCategory(CategoryPageQueryDTO categoryPageQueryDTO) {
        PageHelper.startPage(categoryPageQueryDTO.getPage(), categoryPageQueryDTO.getPageSize());
        Page<Category> page = categoryMapper.pageCategory(categoryPageQueryDTO);
        long total = page.getTotal();
        List<Category> records = page.getResult();
        return new PageResult(total, records);
    }

    /**
     * 启用禁用分类
     *
     * @param status
     * @param id
     */
    @Override
    public void updateCategoryStatus(Integer status, Long id) {
        Category category = Category.builder()
                .id(id)
                .status(status)
                .updateTime(LocalDateTime.now())
                .updateUser(BaseContext.getCurrentId())
                .build();

        categoryMapper.update(category);
    }

    /**
     * 根据类型查询分类
     *
     * @param type
     * @return
     */
    @Override
    public List<Category> getCategoryList(Integer type) {
        List<Category> list = categoryMapper.getCategoryListByType(type);
        System.out.println(list);
        return list;
    }

}
